Image processing method and foreground area obtaining method

摘要

To make a determination as to whether or not it is a foreground area which is an area of a main subject is hardly dependent on the form of an edge detected from an image.An edge extracting process is performed on each of a JP image that is a captured image focused on a main subject and an INF image that is a captured image that is focused at infinity (step S3). The difference value between the block integrated value of the JP image after the edge extraction processing and the block integrated value of the INF image after the edge extraction processing is acquired (steps S4 and S5). An area division process is performed on the JP image (step S 8). The foreground region map is acquired based on the evaluation result of the tendency of the magnitude of the difference value for each divided region (steps S 6, S 7 and S 9). By blurring the JP image on the basis of the foreground region map, an image in which the background region is blurred is acquired (step S10).(FIG.